Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:58:47 2013

Optimize a model with 37881 rows, 3721 columns and 115351 nonzeros
Presolve removed 4338 rows and 1910 columns
Presolve time: 0.29s
Presolved: 33543 rows, 1811 columns, 102074 nonzeros
Variable types: 25 continuous, 1786 integer (1786 binary)
Found heuristic solution: objective 83058.000000

Root relaxation: objective 6.743439e+04, 10148 iterations, 0.73 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 67434.3857    0    8 83058.0000 67434.3857  18.8%     -    1s
H    0     0                    67451.000000 67434.3857  0.02%     -    1s
H    0     0                    67446.000000 67434.3857  0.02%     -    1s
     0     0 67434.9778    0    9 67446.0000 67434.9778  0.02%     -    1s
     0     0 67434.9778    0    7 67446.0000 67434.9778  0.02%     -    1s
H    0     0                    67438.000000 67434.9778  0.00%     -    1s

Explored 0 nodes (10336 simplex iterations) in 1.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.743800000000e+04, best bound 6.743500000000e+04, gap 0.0044%